class_docstr: ImageSet wraps a set of ImageFeature
docstr: get image from ImageSet
docstr_tok: ["get","image","from","ImageSet"]
code: def get_image(self, key="floats", to_chw=True):
      """
      get image from ImageSet
      """
      return self.image_set.get_image(key, to_chw)
  
imports: from bigdl.transform.vision.image import ImageFrame
  from bigdl.util.common import *
  from zoo.common.utils import callZooFunc
label_desc: Use image node_id 9 for calling the ImageSet obj's underlying member method code with example usage: obj.get_image(key, to_chw) and returns: self